hi all. i have a 4gb sandisk micro sdhc class 2 for my m3real and never had problems (besides problems with space) thats why i ordered a 8gb sandisk micro sdhc. but its also class 2. i didnt really care all about this class thing until i start reading things like that some games require a class 4 or 6 card. (castlevania, animal crossing) but since i never experienced any problems with my 4gb class 2 and i'm not playing castlevania, i wonder if its worth the upgrade. are there a lot of games that could make problems or run slow on class 2 cards?